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1. (WO2018079353) LITHIUM ION SECONDARY BATTERY
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Pub. No.: WO/2018/079353 International Application No.: PCT/JP2017/037611
Publication Date: 03.05.2018 International Filing Date: 18.10.2017
IPC:
H01M 4/36 (2006.01) ,H01M 2/16 (2006.01) ,H01M 4/131 (2010.01) ,H01M 4/48 (2010.01) ,H01M 4/505 (2010.01) ,H01M 4/525 (2010.01) ,H01M 4/62 (2006.01) ,H01M 10/0525 (2010.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2
Constructional details, or processes of manufacture, of the non-active parts
14
Separators; Membranes; Diaphragms; Spacing elements
16
characterised by the material
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
131
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
50
of manganese
505
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
52
of nickel, cobalt or iron
525
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
62
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
052
Li-accumulators
0525
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
Applicants:
マクセルホールディングス株式会社 MAXELL HOLDINGS, LTD. [JP/JP]; 京都府乙訓郡大山崎町大山崎小泉1番地 1, Koizumi Oyamazaki, Oyamazaki-cho, Otokuni-gun, Kyoto 6188525, JP
Inventors:
阿部 浩史 ABE, Hiroshi; JP
石澤 政嗣 ISHIZAWA, Seiji; JP
吉川 進 YOSHIKAWA, Susumu; JP
稲葉 章 INABA, Akira; JP
Agent:
三輪 鐵雄 MIWA, Tetsuo; JP
三輪 英樹 MIWA, Hideki; JP
Priority Data:
2016-20821425.10.2016JP
Title (EN) LITHIUM ION SECONDARY BATTERY
(FR) BATTERIE RECHARGEABLE AU LITHIUM-ION
(JA) リチウムイオン二次電池
Abstract:
(EN) Provided is a lithium ion secondary battery which has excellent charge and discharge cycle characteristics. A lithium ion secondary battery according to the present invention is provided with a negative electrode which comprises a negative electrode mixture layer that contains, as a negative electrode active material, a composite body of a carbon material and a material containing Si and O as constituent elements (provided that the atomic ratio x of O to Si satisfies 0.5 ≤ x ≤ 1.5), while containing a specific copolymer as a binder. The ratio of the carbon material to 100 parts by mass of the material containing Si and O as constituent elements in the composite body is 3-20 parts by mass; the content of the composite body in the total mass of the negative electrode active material contained in the negative electrode mixture layer is 0.5-100% by mass. This lithium ion secondary battery is provided with a positive electrode which contains, as a positive electrode active material, a metal oxide that is composed of Li and a metal M other than Li; and the molar ratio of Li to the metal M other than Li contained in the positive electrode active material, namely Li/M is 0.8 to 1.05 if discharged at a discharge current rate of 0.1 C until the voltage reaches 2.0 V.
(FR) La présente invention concerne une batterie rechargeable au lithium-ion qui présente d’excellentes caractéristiques de cycle de charge et de décharge. Une batterie rechargeable au lithium-ion selon la présente invention est pourvue d’une électrode négative qui comprend une couche de mélange d’électrode négative qui contient, en tant que matériau actif d’électrode négative, un corps composite constitué d’un matériau carboné et d’un matériau contenant Si et O en tant qu’éléments constitutifs (à condition que le rapport atomique x de O à Si satisfasse à 0,5 ≤ x ≤ 1,5), tout en contenant un copolymère spécifique en tant que liant. Le rapport du matériau carboné à 100 parties en masse du matériau contenant Si et O en tant qu’éléments constitutifs dans le corps composite est de 3 à 20 parties en masse ; la teneur du corps composite dans la masse totale du matériau actif d’électrode négative contenu dans la couche de mélange d’électrode négative est de 0,5 à 100 % en masse. Cette batterie rechargeable au lithium-ion est pourvue d’une électrode positive qui contient, en tant que matériau actif d’électrode positive, un oxyde métallique qui est composé de Li et d’un métal M autre que Li ; et le rapport molaire Li au métal M autre que Li contenu dans le matériau actif d’électrode positive, à savoir Li/M est de 0,8 à 1,05 en cas de décharge à un taux de courant de décharge de 0,1 C jusqu’à ce que la tension atteigne 2,0 V.
(JA) 充放電サイクル特性に優れたリチウムイオン二次電池を提供する。 本発明のリチウムイオン二次電池は、SiとOとを構成元素に含む材料(ただし、Siに対するOの原子比xは、0.5≦x≦1.5)と炭素材料との複合体を負極活物質として含有し、かつ特定の共重合体をバインダとして含有する負極合剤層を有する負極を備えており、前記複合体における、SiとOとを構成元素に含む材料:100質量部に対する炭素材料の比率が3~20質量部であり、負極合剤層が含有する負極活物質全量中における前記複合体の含有量が0.5~100質量%であり、LiとLi以外の金属Mとで構成される金属酸化物を正極活物質として含有する正極を有しており、0.1Cの放電電流レートで電圧が2.0Vに達するまで放電したとき、前記正極活物質に含まれるLiとLi以外の金属Mとのモル比(Li/M)が、0.8~1.05である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)